Transparent silicone rubber usually means fumed silica — and fumed silica means cost. But when the requirement is transparency plus reinforcement, a well-selected precipitated grade can take over part of the duty.

IOTA FINE SIL 7360 is a superfine precipitated silica developed for high-transparent and reinforcing silicone rubber applications.

1. What Is FINE SIL 7360?

It is an ultrafine precipitated silicon dioxide made by a special processing technology, with excellent reinforcement and dispersion. Production practice shows it can fully or partly replace more expensive fumed silica, reducing production cost.

Published specifications:

2. What Does It Deliver in Silicone Rubber?

Stated performance in the rubber industry — especially silicone rubber:

• Reinforcement above ordinary precipitated silica

• Good tensile strength and wear resistance

• Good color and good transparency

• No whitening after stretching, no deformation

3. How Should You Evaluate It?

1. Decide the substitution ratio — start with partial replacement of fumed silica (for example 30–50%) rather than a full switch.

1. Run a side-by-side trial at equal total filler loading against your current compound.

1. Compare tensile strength, transparency and appearance after cure — including stretching, where whitening shows first.

1. Adjust the ratio step by step; full replacement is possible in some systems but must be proven by test.

FAQ

1. Can 7360 fully replace fumed silica?

Full or partial replacement is a stated capability — the working ratio depends on your transparency and reinforcement targets and must be confirmed by trial.

2. Is it suitable only for silicone rubber?

The stated focus is silicone rubber reinforcement; other rubber uses may work but should be verified separately.

Conclusion: for transparent silicone rubber under cost pressure, FINE SIL 7360 is a credible precipitated candidate — start partial, measure, then expand the ratio.

Related product: Precipitated Silica IOTA FINE SIL7360